Speaker



FIG. 1 is a front, right perspective view of the speaker;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side, elevation view thereof; the right side, elevation view being a mirror image thereof;

FIG. 4 is a front, elevation view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a rear elevation view thereof.

The broken lines showing a stand, feet, vents, grille mounting holes, seams, and driver openings are for illustrative purpose only and form no part of the claimed design. 

The ornamental design for a speaker, as shown and described. 